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Open Source · 2025

Kalyndr

A full-stack calendar — Next.js on the front, Spring Boot behind it.

Full-stack
Next.js + Spring Boot
MIT
Open source

Overview

A modern calendar application for managing events and scheduling, built as a monorepo: a Next.js and TypeScript client alongside a Java Spring Boot REST API. Authentication runs through Clerk.

What it took

  • 01

    Monorepo with a clear split: `kalyndr_client` for the Next.js frontend, `kalyndr_server` for the Spring Boot API.

  • 02

    RESTful backend on an MVC pattern, built with Maven.

  • 03

    Responsive event management that holds up across devices.

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Let's build something worth maintaining

Have a platform problem, a team that needs a hand, or just want to argue about API design? My inbox is open.